package com.example.baiduai.utils;

import com.example.baiduai.exception.PlatformException;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;


@Slf4j
public class HttpUtils {

    public static String doGet(String url) {							// 无参数get请求
        return doGet(url, null);
    }

    public static String doGet(String url, Map<String, String> param) {	// 带参数get请求
        CloseableHttpClient httpClient = HttpClients.createDefault();	// 创建一个默认可关闭的Httpclient 对象
        String resultMsg = "";											// 设置返回值
        CloseableHttpResponse response = null;							// 定义HttpResponse 对象
        try {
            URIBuilder builder = new URIBuilder(url);					// 创建URI,可以设置host，设置参数等
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();
            HttpGet httpGet = new HttpGet(uri);							// 创建http GET请求
            response = httpClient.execute(httpGet);						// 执行请求
            if (response.getStatusLine().getStatusCode() == 200) {		// 判断返回状态为200则给返回值赋值
                resultMsg = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            log.info("请求失败 {}",e);
            e.printStackTrace();
        } finally {														// 不要忘记关闭
            try {
                if (response != null) {
                    response.close();
                }
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultMsg;
    }

    /**
     *  没有参数的post请求
     * @param url
     * @return
     */
    public static String doPost(String url) {
        return doPost(url, null);
    }



    /**
     * 带参数 post请求 表单提交
     * @param url
     * @param param
     * @return
     */
    public static String doPost(String url, Map<String, String> param) {
        // 创建一个默认可关闭的Httpclient 对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        CloseableHttpResponse response = null;
        String resultMsg = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            System.out.println("");
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<NameValuePair>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);

                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            if (response.getStatusLine().getStatusCode() == 200) {
                resultMsg = EntityUtils.toString(response.getEntity(), "utf-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultMsg;
    }



    /**
     * 带有文件的POST请求---附件上传
     * @return
     */
    public static String doPostFile(String url, MultipartFile multipartFile){
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);
        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        // 上传的文件
        try {
            builder.addBinaryBody("file", multipartFile.getInputStream(), ContentType.create("image/*"), multipartFile.getOriginalFilename());
            HttpEntity httpEntity = builder.build();
            httpPost.setEntity(httpEntity);
            CloseableHttpResponse response=httpClient.execute(httpPost);
            return EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }



    /**
     * post以JSON方式  请求
     * */
    public static String doPostJson(String url, Object badyData) {
        return   doPostJson( url,  badyData,null);
    }




    /**
     * post以JSON方式  请求
     * */
    public static String doPostJson(String url, Object badyData,Map<String, String> params) {
        if(!ObjectUtils.isNotEmpty(url)) throw new PlatformException("post url参数为空");

        CloseableHttpClient httpClient = HttpClients.createDefault();	// 创建一个默认可关闭的Httpclient 对象
        String resultMsg = "";											// 设置返回值
        CloseableHttpResponse response = null;// 定义HttpResponse 对象
        try {
            URIBuilder builder = new URIBuilder(url);					// 创建URI,可以设置host，设置参数等
            if (ObjectUtils.isNotEmpty(params)) {
                for (String key : params.keySet()) {
                    builder.addParameter(key, params.get(key));
                }
            }
            URI uri = builder.build();

            HttpPost httpPost = new HttpPost(uri);
            // 创建请求内容
            if(ObjectUtils.isNotEmpty(badyData)){
                StringEntity entity = new StringEntity(GsonUtils.toJson(badyData), ContentType.APPLICATION_JSON);
                httpPost.setEntity(entity);
            }

            // 执行http请求
            response = httpClient.execute(httpPost);
            resultMsg = EntityUtils.toString(response.getEntity(), "utf-8");

        } catch (Exception e) {
            log.info("请求失败 {}",e);
            e.printStackTrace();
        } finally {														// 不要忘记关闭
            try {
                if (response != null) {
                    response.close();
                }
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultMsg;

    }




}